Corrugated-paper-facing machine.



R. H. CLARKE.

CORRUGATED PAPER FAGING MACHINE.

APPLICATION FILED MAB.. 4, 1911.

Patented Apr. 28, 1914.

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lul. El'. y INI. IISIILWINPI i TTNTTE STATES PATENT CFTC.

RALPH H. CLARKE, OF COSHOCTON, OHIO, ASSIGNOR TO CORR-UGATED FIBRE CO., OF DAYTON, OHIO, A CORPORA'IION` OF NEW JERSEY.

CORRUGATED-PAPER-FACING MACHINE.

rossana.

To f/ZZ 107mm t may concern:

Be it known that I, RALPH H. CLARKE, a citizen of the Dominion of Canada, and a resident of the city of Coshocton, county of Coshocton, and State of Chio, have invented certain new and useful Improvements in Corrugated Paper Facing Machines, of which the following is a specification.

rlhis invention relates to machines for making so-called cellular board, or what is more commonly known as double-faced corrugated paper.

As has come to be well known, very strong and durable as well as comparatively very light packages may be made from this character of stock, which comprises a sheet or strip of corrugated or fluted paper to the crowns of the corrugations on each side of which is aflixed a backing or facing strip, thus providing for the requisite stiffness.

rlhere are many well-known forms of machines for corrugating the middle strip or sheet and for applying the facing strip to one side thereof. This single-faced paper, before the second facing strip has been added thereto, is su'll'iciently flexible to enable the saine to be rolled upon a reel, and this invention more particularly relates to machines for applying the second facing strip to single-faced corrugated paper which has been first prepared and rolled upon a reel.

In double-facing corrugated paper, as a rule, a suitable paste or adhesive compound is first delivered to the crowns of the corru- 'gations, and the second facing strip is then applied, the strips then being carried along longitudinally and held in close and uniform contact with each other until the paste has set or dried, the drying process being facilitated through the application of heat. It is of the utmost importance, obviously, in producing high-grade stock, to keep the facing strip in close and uniform contact with the corrugated strips during the drying process, to so facilitate the drying process that the machine may be operated at suiiicient speed to insure economy in the use thereof and obviate the necessity of making the machine of excessive dimensions in' order to provide a path of travel for the sheets which will insure the drying or setting of the paste prior to relieving the strips of the pressure which has held them together.

rThe principal object of the present invention is the provision of a machine which may Specification of Letters Patent.

Application filed March 4, 1911.

Patented Apr. 23, 1914.

Serial No. 612,346.

be operated at comparatively high speed, which will keep the sheets subjected to the requisite pressure during the drying operation, which will advance the strips under such pressure positively and yet without the application of crushing forces, and otherwise to provide a machine which will be simple in construction and dependable and economical 1n operation.

My invention will be more readily understood by reference to the accompanying drawings, forming a part of this specification, in which- Figure 1 is a side elevation of a machine embodying my invention; Fig. 2 is an end elevation thereof, and Fig. 3 is a vertical section substantially on the line 2 2 of Fig. l.

Referring now to the drawings in detail, I have shown a frame which comprises preferably eight posts or standards, four thereof, G, 7, S and 9, on one side of the machine and their four opposite counterparts on the other side of the machine. Each pair of standards is preferably provided with the cross-brace 10, and the standards on each side are preferably braced by means of the -beams 11 11 which are supported upon brackets 12 12 and extend the full length of the machine.

Cn the inner faces of the standards 6 and 7 and their opposite counterparts, are mounted brackets 13 18 and these brackets carry longitudinally extending track rails 14rand let. These track rails support a sliding carriage which is preferably made up of a supporting base plate 15 and plurality or series of preferably hollow or box-shaped members 1G 1G secured to said plate and providing a substantially continuous supporting and heating surface for the paper strips in transit through the machine. These mem` bers 1G 1G not only cooperate with other members hereinafter described to advance said strips, but are also intended to heat said strips to facilitate the drying operation. I therefore prefer that these members be hollow in order that steam may be delivered to the chambers therein, although if heat is to be applied in any other manner it will be apparent that a solid plate or member may be employed.

Above the members 1G is provided the preferably hollow member 17, having pivoted connection with the members 16 through the links 1S 18 and their opposite counterparts. These links are of such length that while the plate 17 may normally rest upon the top faces of the members 16, or upon the faced strip interposed therebetween, said plate 17 may be raised and held in a slightly elevated position by said links, the lower end of each of said links being provided with a notch or hook 19 adapted to coperate with a suitably located pin or stop 20 on one of the members 1G to hold the plate 17 in this raised position. At the other end of the machine, precisely similar mechanism is provided and similarly mounted between the standards 8 and 9 and their opposite counterparts. Here, I provide the track rails 21 upon which is mounted the sliding plate 22 carrying the similar supporting and heating members 23 23. Above these members 23 is the hollow plate or member 211, similarly carried by links 25 25 and their opposite counterparts, these links being similarly provided with the notches or hooks 26 26 adapted to cooperate with the stops 27 27 on the members 23.

In the middle portion of the machine, between the standards 7 and 8 and their opposite counterparts, I mount upon the I-beams 11 11 suitable supports 28 28 for the plate 29, which is also preferably made hollow for the purpose of heating the same by steam. I also provide in this middle portion, suitably secured to the floor, the standards 30 in which is journaled the driving shaft 31 which is connected to any convenient source of power. On this shaft 31 are mounted the eccentries 32 and 33, the eccentric 32 being provided with the usual eccentric strap 3ft secured to the end of the connecting` rod 35 which has pivotal connection with the lower end of the bracket 36 depending` from the plate 15 of the left-hand carriage. Similarly, the eccentric 33 carries the usual strap 37 at the end of the connecting rod 38 which is similarly connected to the bracket 39 on the plate 22. These eccentrics are oppositely located on the shaft 31 and it will be apparent that when said shaft 31 is rotated, the eccentrics will operate to reciprocate the plates 15 and 22 in opposite directions; that is to say, these carriages will be reciprocated in unison but will move alternately toward and from each other.

On the post 9, and likewise on its counterpart, I mount a bracket 10l provided with a stop 41 which is located in the path movement of the top plate 24: with the right-hand carriage. This stop is designed to engage said top plate and check movement thereof before said carriage comes to rest, movement of the latter being continued so that said plate 24 is raised by the links 25 25 from the position indicated in Fig. 1 to a position corresponding to that shown of the top plate 17 at the other end of the machine. At this point, said carriage starts to move in the reverse direction with the top plate held in its raised position. On the standard 8 and its opposite counterpart, are provided corresponding brackets r-12 with stops l13, also lo cated on the path of movement of said top plate 24: to check movement thereof prior to the end of the path movement of the plate 22 and members 23 in this direction. These stops, therefore, will have the effect of returning` said top plate, through the links 25 25, to its original position upon the members 23. At the other end of the machine, the post G and its opposite counterpart, and the post 7 and its opposite counterpart, are similarly provided with corresponding stops l1 and 45, respectively, which have a precisely similar function with respect to the carrying plate 15 and the pivotally connected top plate 17. It will be noted that duringl movement of both carriages to the right (Fig. 1) the top plates 17 and 211 rest upon the upper faces of the members 1G and 23 underneath the same. while during movement to the left of each carriage the top plate is held in slightly raised position.

The members 1G, at one end of the machine, the plate 2t) in the middle portion thereof, and the members 23 at the other end of the machine, have their top faces in substantially the same horizontal plane and provide a flat table along which the paper' strips are drawn. To provide a continuous supporting surface, in view of the reciprocating movements of the members 16 and 23, I provide the inner member 1G with projecting linger' 45, supported by the bracket or brace 16, which fingers slide in correspondingly shaped grooves 4 7 in the top :tace of the plate 29. Similarly, corresponding lingers y-18 are supported upon the brace -l-t) and projecting from the inner member 28 into grooves 50 on the other side of the plate 2S). These lingers are of such length that the ends thereof project into the grooves in the plate 29 in all positions of the members 1G and 23. In this manner, a continuous supporting surface is provided for the paper strips during their transit through the machine.

At the left of the machine (Fig. 1) I have shown a roll 51 of single-faced eorrugatral paper, which, as it unwinds, is passed under an idler roller where paste is delivered to the crowns of the corrugations from the usual paste roller 53. rl`he second facing strip is preferably supplied from a suitablyr mounted roll and is directed into contact with the crowns of the corrugations of the single-faced corrugated strip between the idler rollers and 5G which direct. the strips to the table provided by the members lt, 2f) and 23.

It will now be apparent that as the shaft 31 is rotated, the plate 17, at the left-hand end of the machine, will at a certain point be forced down upon the strips between the same and the members 1G, and the weight of said plate is su'liicient to provide a frictional grip without subjecting the strips to crushiiig forces. At this point, the carriage of which this plate forms a part starts its movement toward the right (Fig. 1) and the strips will be carried along therewith, subj ected both to the gripping pressure referred to, which also holds the strips in contact with each other, and to the heat from these plates. During mov unent of this carriage in this direction, the carriage at the other ond of the machine will be moved in a reverse direction with the plate 2i held in its elevated position, thus permitting the strips at this end of the machine to pass freely under said plate. At the end of this movement to the right of the left-hand carriage, and to the left of the other carriage, the plate 17 will be raised in the manner described and the plate 21 lowered to grip the strips, so that upon return movement of the right-hand carriage, the strips will continue to be advanced, while the left-hand carriage, with its raised plate 17 does not interfere with free movement of the strips,

It will be noted that the strips, in transit through the machine, are first subjected to a pulling fo-rce, when engaged by the righthand carriage, and then subjected to a pushing force, when engaged by the lefthand carriage. To prevent buckling or bending of the strips over the stationary plate 29, when subjected to the pushing"7 forces, and also to insure continued contact between the strips, I may provide side rails 57, carried by the posts 7 and 8 and their` opposite counterparts, in which are loosely7 journaled a series of idler rollers 5S, the weight of which will serve to accomplish the purposes to which I have referred without the generation of undue friction.

For the purpose of clearness of illustration, I have somewhat exaggerated, in the drawings, the distance through which the plates 17 and 24- are raised. In practice, as will be apparent, it is only necessary to raise these plates a sufficient distance to clear the top surface of the paper strips and permit the latter to move freely thereunder. rIhese plates should not be raised to a point where their fall will be sufficient to crush the corrugations of the corrugated strip.

Y ith respect to my invention, it will be noted that I malte the heating and compressing plates themselves serve to advance the strips without other actuating mechanism, thereby, in addition to simplifying the mechanism, also eliminating the necessity for providing excessive gripping forces in order to draw the strips between the stationary plates under the friction necessarily generated thereby. It will be furthermore apparent that while movement of the strips is accomplished by intermittently effective mechanism, the movement of said strips is substantially continuous. rl`here will be, of course, certain short periods of rest, during which, if desired, a suitable knife may be operated to sever the portion of the doublefaced strip which has been carried out of the machine. It will be furthermore apparent that the provision of eccentrics to actuato the carriages, provides driving means which start very slowly, gradually increasing in speed until a maximum is reached at the middle of the path of movement of the carriage, after which the speed gradually decreases until the carriage is stopped. In this manner, inertia is much more easily overcome and the strips positively advanced with but little, if any, slipping.

Many modifications of minor details of my improved machine for facing corrugated paper will doubtless readily suggestthemselves to those skilled in the art to which it appertains, and I therefore do not desire to limit my invention to the specific construction shown and described.

I claim as new and desire to secure by Letters Patent:

1. In a machine for facing corrugated paper, the combination, with a pair of oppositely reciprocating supports for the strips during their transit through the machine, of means cooperating with each support during the reciprocation thereof in one direction to advance said strips and at the same time subject them to the requisite pressure.

2. In a machine for facing corrugated paper, the combination, with a reciprocating support for the strips during their transit through the machine, of an upper presser plate carried by said support and pressing against the strips during reciprocation of said support in one direction, and means for raising said plate clear of said strips and holding the same in its raised position during reciprocation. of said support in the other direction.

8. In a machine for facing corrugated paper, the combination, with a pair of oppositely reciprocating supports for the strips during their transit through the machine, of a presser plate carried by each of said supports and pressing against said strips during movement of said support in one direction, and means for raising each of said platesI clear of said strips and holding the same in its raised position during movement of said supports in the opposite directio-n. i

4. In a machine for facing corrugated paper, the combination, with a pair of oppositely reciprocating supports for the strips during their transit through the machine, of a presser plate carried by each of said supports and pressing against said strips during movement of said support in one direction, means for raising each of said plates clear of said strips and holding the same in its raised position during movement of said supports in the opposite direction, and means for heating` said supports and said plates.

5. In a machine for facing corrugated paper, the combination, with a pair of reciprocating supports, an intermediate stationary support, and means cooperating with said reciprocating supports for advancing the paper strips through the machine, of means for insuring a continuous supporting surface irrespective of the positions of said reciprocating supports.

G. In a machine for facing corrugated paper, the combination with a suitable support for the paper strips in transit through the machine, of reciprocating means at each end of the machine alternately and intermittently operable to advance said strips.

7. In a machine for facing` corrugated paper, the combination, with a suitable support for paper strips in transit through the machine, of reciprocating means at each end of the machine alternately operable to advance said strips intermittently and at the saine time subject them to the requisite pressure.

S. In a machine for facing corrugated paper, the combination, with a suitable supporting surface for the paper strips in transit through the machine, of a reciprocating carriage at each end of the machine, each of said carriages comprising a portion of said supporting surface and a presser plate effective during movement o-f said carriage in one direction only, a driving shaft, and connecting means between said shaft and eachof said carriages to reciprocate said carriages in unison in opposite directions.

9. In a machine for facing corrugated paper, the combination, with a suitable supporting surface for the paper strips in transit through the machine, of a reciprocating carriage at each end of the machine, each of said carriages comprising a portion of said supporting surface and a presser plate effecn tive during movement of said farriage in onedirection only, a driviiig shaft, and connecting means between said shaft and each of said carriages to reciprocate said carriages in unison in opposite directions, and means for heating said support and said carriages.

10. In a machine for facing corrugated paper, a plurality of pairs of pressing platens, each pair consisting of opposed upper and lower platens, means for reciprocating said pairs of platens in opposite directions to each other, and means for separating the platens of cach pair as the same moves rearwardly and closing said platens as said pair thereof moves forwardly.

ll. In a machine for facing corrugated paper, a plurality of pairs of pressing platens, each pair consisting of opposed upper and lower platens, means for reciprocating said pairs of platens in opposite directions to each other, and means fo-r causing the upper platen of each pair to be raised as the pairs of platens move rearwardly and for lowering the upper platen into gripping contact with the paper to be faced as the pairs of platens move forwardly.

12. In a machine for facing corrugated paper, the combination, ,witlrnieans for directingva,,corrugated paper web with and between plain facing webs into the machine, of a plurality of pairs of pressing platens, each pair consisting of upper and lower platens, means for heating` the platens of each pair of platens, means for reciprocating each pair of platens along the line of the paper being faced, and means for causing the upper platen of each pair to lower as it moves in a forward direction, thus gripping the paper, and to be raised as it moves in a rearward direction, thus releasing the paper.

13. In a machine for facing corrugated paper, the combination, with means for directing a corrugated paper web with and between plain facing webs into the machine, of a plurality of pairs of oppositely disposed co-acting heating and pressing platens alternately operable to intermittently press and advance said webs, and means for reciprocating said pairs of platens.

In testimony of the foregoing, I have hereunto set my hand in the presence of two witnesses.

RALPH II. CLARKE.

lVitnesses Cimnmcs B. HUNT, Maar M. HUNT.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents` Washington, D. C. 

